请查看此代码：
# -*- coding: utf-8 -*-
from lxml import etree
html_fragment = "<body><p>This is html, you can <a href='wikpedia'>learn more</a> on the wikipedia page</p></body>"
tree = etree.fromstring(html_fragment, etree.HTMLParser())
for x in tree.findall(".//p") :
print(x.text)
此印刷品：
This is html, you can
它会删除a标记之前的文字。如何获取p代码的所有文字？